Written by Robert Bailey

What is Worm:Win32/Duptwux.A infection?

In this short article you will certainly locate regarding the definition of Worm:Win32/Duptwux.A and its adverse influence on your computer system. Such ransomware are a type of malware that is elaborated by online fraudulences to demand paying the ransom by a target.

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Most of the cases, Worm:Win32/Duptwux.A ransomware will certainly advise its sufferers to initiate funds move for the function of neutralizing the amendments that the Trojan infection has introduced to the sufferer’s tool.

Worm:Win32/Duptwux.A Summary

These adjustments can be as adheres to:

  • Executable code extraction. Cybercriminals often use binary packers to hinder the malicious code from reverse-engineered by malware analysts. A packer is a tool that compresses, encrypts, and modifies a malicious file’s format. Sometimes packers can be used for legitimate ends, for example, to protect a program against cracking or copying.
  • Creates RWX memory. There is a security trick with memory regions that allows an attacker to fill a buffer with a shellcode and then execute it. Filling a buffer with shellcode isn’t a big deal, it’s just data. The problem arises when the attacker is able to control the instruction pointer (EIP), usually by corrupting a function’s stack frame using a stack-based buffer overflow, and then changing the flow of execution by assigning this pointer to the address of the shellcode.
  • Reads data out of its own binary image. The trick that allows the malware to read data out of your computer’s memory.

    Everything you run, type, or click on your computer goes through the memory. This includes passwords, bank account numbers, emails, and other confidential information. With this vulnerability, there is the potential for a malicious program to read that data.

  • A process created a hidden window;
  • Drops a binary and executes it. Trojan-Downloader installs itself to the system and waits until an Internet connection becomes available to connect to a remote server or website in order to download additional malware onto the infected computer.
  • Unconventionial language used in binary resources: Turkish;
  • Uses Windows utilities for basic functionality;
  • Installs itself for autorun at Windows startup. There is simple tactic using the Windows startup folder located at:
    C:\Users\[user-name]\AppData\Roaming\Microsoft\Windows\StartMenu\Programs\Startup. Shortcut links (.lnk extension) placed in this folder will cause Windows to launch the application each time [user-name] logs into Windows.

    The registry run keys perform the same action, and can be located in different locations:

    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
  • Operates on local firewall’s policies and settings;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers found on the target’s hard disk — so the target can no more make use of the information;
  • Preventing regular accessibility to the target’s workstation;
Similar behavior
Related domains
z.whorecord.xyz Ransom:Win32/Blocker.15113860
a.tomx.xyz Ransom:Win32/Blocker.15113860


The most common channels through which Worm:Win32/Duptwux.A are infused are:

  • By ways of phishing emails;
  • As an effect of user ending up on a source that hosts a malicious software;

As soon as the Trojan is efficiently infused, it will either cipher the information on the victim’s computer or stop the gadget from operating in a proper way – while also placing a ransom note that discusses the need for the targets to impact the repayment for the objective of decrypting the files or restoring the file system back to the preliminary problem. In many circumstances, the ransom note will come up when the customer restarts the COMPUTER after the system has actually already been harmed.

Worm:Win32/Duptwux.A distribution channels.

In various edges of the world, Worm:Win32/Duptwux.A expands by leaps and bounds. Nonetheless, the ransom money notes as well as tricks of extorting the ransom amount may vary relying on specific regional (local) settings. The ransom notes and techniques of extorting the ransom amount might vary depending on particular local (regional) setups.

Ransomware injection

For instance:

    Faulty informs regarding unlicensed software program.

    In specific locations, the Trojans typically wrongfully report having actually found some unlicensed applications allowed on the victim’s device. The sharp after that requires the customer to pay the ransom money.

    Faulty declarations regarding unlawful content.

    In nations where software program piracy is less preferred, this technique is not as efficient for the cyber scams. Conversely, the Worm:Win32/Duptwux.A popup alert may falsely claim to be originating from a law enforcement institution and also will report having situated child porn or various other unlawful information on the device.

    Worm:Win32/Duptwux.A popup alert may incorrectly assert to be obtaining from a legislation enforcement institution as well as will report having located youngster pornography or various other unlawful data on the device. The alert will in a similar way contain a demand for the individual to pay the ransom money.

Technical details

File Info:

crc32: 235A85CB
md5: 0f4470c9420900b42bd249ba438f68f3
name: 0F4470C9420900B42BD249BA438F68F3.mlw
sha1: 9c9ba954fe03d4718880f694476db01d90dda4bf
sha256: e0a53f10201ced7aba365c7fd288a198d7fe414f074d8f00979be73bde2d8cf1
sha512: c2a3180ec9fc8a4e27382c8dc82db90074f17e8bcde5477eb42ca05bd6f23a98f4bce1a791f611fca83aeb58973acaa9ab0d6001b8282bbe8545e9c81f6961ee
ssdeep: 24576:lLnaj7ySWIq2wfrx+P4TbTq/aA8ttknGTE8vlj+9A3SvGIGV/wgMGsTAo:FELq3Dk4nWi8MEUlhcGp/wgEko
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Worm:Win32/Duptwux.A also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus Trojan ( 0055e3df1 )
Elastic malicious (high confidence)
DrWeb Trojan.MulDrop2.21746
Cynet Malicious (score: 100)
ALYac Gen:Trojan.Heur.ZHZ@t5VLJ@dGb
Cylance Unsafe
Zillya Trojan.Swisyn.Win32.20892
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/Blocker.15113860
K7GW Trojan ( 0055e3df1 )
Cybereason malicious.942090
Cyren W32/Risk.FRQL-2013
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/TrojanDropper.Binder.NBD
APEX Malicious
Avast Win32:Dropper-FXE [Drp]
ClamAV Win.Trojan.Agent-1103185
Kaspersky Trojan-Ransom.Win32.Blocker.ftnk
BitDefender Gen:Trojan.Heur.ZHZ@t5VLJ@dGb
NANO-Antivirus Trojan.Win32.Swisyn.dvqwm
MicroWorld-eScan Gen:Trojan.Heur.ZHZ@t5VLJ@dGb
Tencent Win32.Trojan.Blocker.Hfg
Ad-Aware Gen:Trojan.Heur.ZHZ@t5VLJ@dGb
Sophos Mal/Generic-S + Troj/Pasta-D
Comodo Suspicious@#1io11371abnh1
BitDefenderTheta AI:Packer.3701DEB01D
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_Blocker.R002C0DE621
McAfee-GW-Edition BehavesLike.Win32.Worm.tc
FireEye Generic.mg.0f4470c9420900b4
Emsisoft Gen:Trojan.Heur.ZHZ@t5VLJ@dGb (B)
SentinelOne Static AI – Suspicious PE
Webroot W32.Trojan.Dynamer
Avira HEUR/AGEN.1107671
Kingsoft Win32.Troj.Generic.(kcloud)
Microsoft Worm:Win32/Duptwux.A
Arcabit Trojan.Heur.EA7EFB
GData Gen:Trojan.Heur.ZHZ@t5VLJ@dGb
McAfee Artemis!0F4470C94209
MAX malware (ai score=100)
VBA32 Trojan.Swisyn
Panda Generic Malware
TrendMicro-HouseCall Ransom_Blocker.R002C0DE621
Rising Ransom.Blocker!8.12A (CLOUD)
Yandex Trojan.GenAsa!hj/WDV+IcSI
Ikarus Trojan.Win32.Pasta
Fortinet W32/LolBot.OH!tr.bdr
AVG Win32:Dropper-FXE [Drp]
Paloalto generic.ml

How to remove Worm:Win32/Duptwux.A ransomware?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
Reasons why I would recommend GridinSoft1

There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft2.

Download GridinSoft Anti-Malware.

You can download GridinSoft Anti-Malware by clicking the button below:

Run the setup file.

When setup file has finished downloading, double-click on the setup-antimalware-fix.exe file to install GridinSoft Anti-Malware on your system.

Run Setup.exe

An User Account Control asking you about to allow GridinSoft Anti-Malware to make changes to your device. So, you should click “Yes” to continue with the installation.

GridinSoft Anti-Malware Setup

Press “Install” button.

GridinSoft Anti-Malware Install

Once installed, Anti-Malware will automatically run.

GridinSoft Anti-Malware Splash-Screen

Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your system for Worm:Win32/Duptwux.A files and other malicious programs. This process can take a 20-30 minutes, so I suggest you periodically check on the status of the scan process.

GridinSoft Anti-Malware Scanning

Click on “Clean Now”.

When the scan has finished, you will see the list of infections that GridinSoft Anti-Malware has detected. To remove them click on the “Clean Now” button in right corner.

GridinSoft Anti-Malware Scan Result

Are Your Protected?

GridinSoft Anti-Malware will scan and clean your PC for free in the trial period. The free version offer real-time protection for first 2 days. If you want to be fully protected at all times – I can recommended you to purchase a full version:

Full version of GridinSoft

Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Worm:Win32/Duptwux.A you can always ask me in the comments for getting help.

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  1. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
  2. More information about GridinSoft products: https://gridinsoft.com/products/

About the author

Robert Bailey

Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

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